/*
 * Copyright 2009-2020 Tilmann Zaeschke
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.zoodb.jdo.ex2;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import org.zoodb.api.impl.ZooPC;

public class School extends ZooPC {

	private String name;
	private Set<Teacher> teachers = new HashSet<>();
	private Set<Student> students = new HashSet<>();
	private Set<Course> courses = new HashSet<>();
	
	
	public School(String name) {
		this.name = name;
	}
	
	public String getName() {
		zooActivateRead();
		return name;
	}
	
	public void addTeacher(Teacher t) {
		zooActivateWrite();
		teachers.add(t);
	}
	
	public void addStudent(Student s) {
		zooActivateWrite();
		students.add(s);
	}
	
	public void addCourse(Course c) {
		zooActivateWrite();
		courses.add(c);
	}

	public Set<Teacher> getTeachers() {
		zooActivateRead();
		return Collections.unmodifiableSet(teachers);
	}

	public Set<Student> getStudents() {
		zooActivateRead();
		return Collections.unmodifiableSet(students);
	}

	public Set<Course> getCourses() {
		zooActivateRead();
		return Collections.unmodifiableSet(courses);
	}
}
